I live in Ontario, Canada. It gets lots of snowfall, but then milder weather that can make snowy roads very icy. One mild day this winter, it was warm enough to bundle up and ride, the roads were scraped down, and i decided to trailer over to a friend's. I had to climb a steep hill on route, and half way up the hill, the weight of the trailer with horse pulled my truck down the hill, slowly sliding until the trailer was deep into the ditch with my single horse pinned into an open 2 horse trailer. She is 5 years old, and was tied. I had to wait for my son to drive 15 minutes to help pull me up and off the road. All the while, my mare was slanted with her back feet down a steep, steep angle where she was unable to put weight on her front feet, just using them to keep upright. When we moved the trailer slightly, i was able to drop the back and walk her out. She did do some struggling while pinned, but she is overall a practical girl and had no cuts, she just sprained her shoulder from trying to right herself, her legs had very little swelling. I was amazed but now i need to know how best to re-introduce this trailer! it has been 8 weeks or so.